1. Title bar: fill in the title related to the drawing content at the top or corner of each drawing box. The title bar usually includes the drawing name, drawing number, design unit, designer's signature and other information.

2. Proportion: fill in the scale in the appropriate position of the drawing frame, and the scale indicates the proportional relationship between the length on the drawing and the actual length.

3. Numbering and marking: According to the contents of the drawings, add necessary symbols and marks in the drawing frame, such as arrows, guide lines, size marks, etc.